Introduction of New Criterion for Detecting COPD during Health Check-up

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  • 呼吸機能検査におけるCOPD診断基準の導入
  • コキュウ キノウ ケンサ ニ オケル COPD シンダン キジュン ノ ドウニュウ

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Abstract

Purpose: In June 2009, our institution introduced a new criterion for detecting chronic obstructive pulmonary disease (COPD) based on spirometric findings during the general health check-up. In this study, we investigated the validity and usefulness of this criterion.<br>Subjects and Methods: Our subjects were 16,744 health check-up examinees (10,108 men, 6,636 females) who underwent spirometry between June 2009 and May 2010, and those with airflow limitation (percent forced expiratory volume in one second (FEV1%) less than 70%) and reduced FEV1% (less than 80%) were recommended for further examination for diagnosis of COPD. Beginning in September 2009, smoking history and clinical history were also considered when determining the need for further examination.<br>Results: Of the 16,744 subjects, 475 (2.8%) met the criteria for airflow limitation and had a significantly lower FEV1%. Of them, 235 were referred to the hospital for further evaluation. This was 20 times higher than the number of referrals in the previous year. We investigated the results of detailed examinations for 200 subjects, and 144 of them (72%) were ultimately diagnosed as having COPD. Among these subjects with COPD, 25% were classified as stage I, 67% as stage II, and 8% as stage III. In 21 patients, medical treatment was initiated.<br>Conclusion: We considered our new criterion to be useful for the preliminary screening and detection of COPD

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